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Technote 2: Setting up MS-551 Stereo Modulators 

Vestigial Side Band TV Stereo Modulators generate an analogue TV channel from the audio 
and video signals .MS-551 Stereo modulators comprise SAW filtering for maximum harmonic 
reduction and true VSB response for adjacent channel operation. 
 

 

IMPORTANT:

  Layout  of  the  modules  must  be  as  shown  above.  Power  Supply  (FA-310/312) 

must  be  located  on  the  far  left  hand  side  and  launch  amplifier  (PA-720)  must  be  the  next 
module in the chain.  Please look at the above picture. 
 

AIM  PROGRAMMER  TO  IR  SENSOR  LOCATED  ON  EACH  MODULATOR 
WHEN PROGRAMMING 

 
 

Programming of Modules 

 
Ensure the following prior to programming: 
 

  It is necessary to connect all the modules to the support frame SP-226 (code 9120130) 

for the system to function.  
 

  It is also recommended that you make the earth connection to the building using a cable 

with a section of at least 4 mm. 

 

  Ensure that you have the Alcad programmer PS-003 with 

firmware version 4.7

 or later. 

 

  Power  supply/Control  cable  must  be  plugged  into  each  module. 

DO  NOT  ADD  OR 

REMOVE 

modules without disconnecting mains supply power from wall outlet.  Always 

disconnect  the  equipment,  and  then  reconnect  it  to  the  mains  supply  so  that  the 
amplifier recognises the new module. Failure to do so can cause equipment to fail. 
 
 

Launch Amplifier 

Power Supply 

Summary of Contents for MS-551

Page 1: ...MODULATOR WHEN PROGRAMMING Programming of Modules Ensure the following prior to programming It is necessary to connect all the modules to the support frame SP 226 code 9120130 for the system to function It is also recommended that you make the earth connection to the building using a cable with a section of at least 4 mm Ensure that you have the Alcad programmer PS 003 with firmware version 4 7 or...

Page 2: ...cod 9120094 Stereo with a miniDIN to RCA connection 1 0 Programming of the Modulator To program the modulator place the programming switch in the ON upward position which can be seen from picture below When you turn the switch in the ON position the programming indicator will light up While the programming indicator remains lit the channel processor is ready to receive data from the PS programmer ...

Page 3: ... as below Table channels frequency Press the arrow down once which will take you to Output Frequency screen Increase decrease the values using the arrows or use the numeric keypad to enter the frequency output that is desired Ensure if you enter the value using the numeric keypad you use the decimal point The Australian Analogue Digital frequency table can be seen on the next page Once you have th...

Page 4: ...AUSTRALIAN DIGITAL ANALOGUE FREQUENCY TABLE The next screen enables the type of Audio output that is to be selected stereo or mono ...

Page 5: ... Video carrier from the modulator Once you have the desired video level set press transmit to ensure setting is sent to module then press the down arrow to go to the next screen below The V A ratio enables 12dB or 16dB ratio settings which is the difference between the Video to Audio carriers Once you have the desired V A ratio set press transmit to ensure setting is sent to module The modulator h...

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